Video: 'Prison Break' Season Four: What's In Store

Is Mahone actually in cahoots with the Company? Does Gretchen really have a beating heart inside her body? Will she team with T-Bag this season? Watch the interviews with Bill Fichtner, Jodi Lyn O'Keefe and Robert Knepper in the video below to get yourself ready for tonight's two-hour premiere of Prison Break...

And if you skipped last season or aren't quite up to speed on the series, no worries. Michael Scofield will catch you up with a nifty little voiceover in the first five minutes of the episode, so def tune in later today.